converter-struct.html 54 KB

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  216. <a href="#json" class="md-nav__link">
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  218. JSON
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  223. <a href="#_1" class="md-nav__link">
  224. <span class="md-ellipsis">
  225. 剔除无效字段
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  230. <a href="#_2" class="md-nav__link">
  231. <span class="md-ellipsis">
  232. 不规范数据
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  237. <a href="#_3" class="md-nav__link">
  238. <span class="md-ellipsis">
  239. 泛型数据类
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  254. <a href="model-generate.html" class="md-nav__link">
  255. <span class="md-ellipsis">
  256. 数据类生成插件
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  263. <li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
  264. <a href="auto-dialog.html" class="md-nav__link">
  265. <span class="md-ellipsis">
  266. 自动化
  267. </span>
  268. <span class="md-nav__icon md-icon"></span>
  269. </a>
  270. </li>
  271. <li class="md-nav__item">
  272. <a href="thread.html" class="md-nav__link">
  273. <span class="md-ellipsis">
  274. 切换线程
  275. </span>
  276. </a>
  277. </li>
  278. <li class="md-nav__item">
  279. <a href="view-model.html" class="md-nav__link">
  280. <span class="md-ellipsis">
  281. ViewModel
  282. </span>
  283. </a>
  284. </li>
  285. <li class="md-nav__item">
  286. <a href="track.html" class="md-nav__link">
  287. <span class="md-ellipsis">
  288. 异常追踪
  289. </span>
  290. </a>
  291. </li>
  292. <li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
  293. <a href="error.html" class="md-nav__link">
  294. <span class="md-ellipsis">
  295. 错误处理
  296. </span>
  297. <span class="md-nav__icon md-icon"></span>
  298. </a>
  299. </li>
  300. <li class="md-nav__item">
  301. <a href="okhttp-client.html" class="md-nav__link">
  302. <span class="md-ellipsis">
  303. OkHttpClient
  304. </span>
  305. </a>
  306. </li>
  307. <li class="md-nav__item">
  308. <a href="interceptor.html" class="md-nav__link">
  309. <span class="md-ellipsis">
  310. 拦截器
  311. </span>
  312. </a>
  313. </li>
  314. <li class="md-nav__item">
  315. <a href="https.html" class="md-nav__link">
  316. <span class="md-ellipsis">
  317. Https证书
  318. </span>
  319. </a>
  320. </li>
  321. <li class="md-nav__item">
  322. <a href="cookie.html" class="md-nav__link">
  323. <span class="md-ellipsis">
  324. Cookie
  325. </span>
  326. </a>
  327. </li>
  328. <li class="md-nav__item">
  329. <a href="cache.html" class="md-nav__link">
  330. <span class="md-ellipsis">
  331. 缓存
  332. </span>
  333. </a>
  334. </li>
  335. <li class="md-nav__item">
  336. <a href="tag.html" class="md-nav__link">
  337. <span class="md-ellipsis">
  338. 标签/额外
  339. </span>
  340. </a>
  341. </li>
  342. <li class="md-nav__item">
  343. <a href="upload-file.html" class="md-nav__link">
  344. <span class="md-ellipsis">
  345. 上传文件
  346. </span>
  347. </a>
  348. </li>
  349. <li class="md-nav__item">
  350. <a href="download-file.html" class="md-nav__link">
  351. <span class="md-ellipsis">
  352. 下载文件
  353. </span>
  354. </a>
  355. </li>
  356. <li class="md-nav__item">
  357. <a href="progress.html" class="md-nav__link">
  358. <span class="md-ellipsis">
  359. 进度监听
  360. </span>
  361. </a>
  362. </li>
  363. <li class="md-nav__item">
  364. <a href="cancel.html" class="md-nav__link">
  365. <span class="md-ellipsis">
  366. 取消请求
  367. </span>
  368. </a>
  369. </li>
  370. <li class="md-nav__item">
  371. <a href="repeat-request.html" class="md-nav__link">
  372. <span class="md-ellipsis">
  373. 重复请求
  374. </span>
  375. </a>
  376. </li>
  377. <li class="md-nav__item">
  378. <a href="debounce.html" class="md-nav__link">
  379. <span class="md-ellipsis">
  380. 搜索节流
  381. </span>
  382. </a>
  383. </li>
  384. <li class="md-nav__item">
  385. <a href="fastest.html" class="md-nav__link">
  386. <span class="md-ellipsis">
  387. 最快请求结果
  388. </span>
  389. </a>
  390. </li>
  391. <li class="md-nav__item">
  392. <a href="log-recorder.html" class="md-nav__link">
  393. <span class="md-ellipsis">
  394. 日志插件
  395. </span>
  396. </a>
  397. </li>
  398. <li class="md-nav__item">
  399. <a href="log-notice.html" class="md-nav__link">
  400. <span class="md-ellipsis">
  401. 日志通知
  402. </span>
  403. </a>
  404. </li>
  405. <li class="md-nav__item">
  406. <a href="timing.html" class="md-nav__link">
  407. <span class="md-ellipsis">
  408. 限时/定时请求
  409. </span>
  410. </a>
  411. </li>
  412. <li class="md-nav__item">
  413. <a href="callback.html" class="md-nav__link">
  414. <span class="md-ellipsis">
  415. Callback
  416. </span>
  417. </a>
  418. </li>
  419. <li class="md-nav__item">
  420. <a href="interval.html" class="md-nav__link">
  421. <span class="md-ellipsis">
  422. 轮询器/倒计时
  423. </span>
  424. </a>
  425. </li>
  426. <li class="md-nav__item">
  427. <a href="https://github.com/liangjingkanji/Net/discussions" class="md-nav__link">
  428. <span class="md-ellipsis">
  429. 社区讨论
  430. </span>
  431. </a>
  432. </li>
  433. <li class="md-nav__item">
  434. <a href="issues.html" class="md-nav__link">
  435. <span class="md-ellipsis">
  436. 常见问题
  437. </span>
  438. </a>
  439. </li>
  440. <li class="md-nav__item">
  441. <a href="updates.html" class="md-nav__link">
  442. <span class="md-ellipsis">
  443. 更新日志
  444. </span>
  445. </a>
  446. </li>
  447. <li class="md-nav__item">
  448. <a href="api/index.html" class="md-nav__link">
  449. <span class="md-ellipsis">
  450. 3.x文档
  451. </span>
  452. </a>
  453. </li>
  454. </ul>
  455. </nav>
  456. </div>
  457. </div>
  458. </div>
  459. <div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
  460. <div class="md-sidebar__scrollwrap">
  461. <div class="md-sidebar__inner">
  462. <nav class="md-nav md-nav--secondary" aria-label="目录">
  463. <label class="md-nav__title" for="__toc">
  464. <span class="md-nav__icon md-icon"></span>
  465. 目录
  466. </label>
  467. <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
  468. <li class="md-nav__item">
  469. <a href="#json" class="md-nav__link">
  470. <span class="md-ellipsis">
  471. JSON
  472. </span>
  473. </a>
  474. </li>
  475. <li class="md-nav__item">
  476. <a href="#_1" class="md-nav__link">
  477. <span class="md-ellipsis">
  478. 剔除无效字段
  479. </span>
  480. </a>
  481. </li>
  482. <li class="md-nav__item">
  483. <a href="#_2" class="md-nav__link">
  484. <span class="md-ellipsis">
  485. 不规范数据
  486. </span>
  487. </a>
  488. </li>
  489. <li class="md-nav__item">
  490. <a href="#_3" class="md-nav__link">
  491. <span class="md-ellipsis">
  492. 泛型数据类
  493. </span>
  494. </a>
  495. </li>
  496. </ul>
  497. </nav>
  498. </div>
  499. </div>
  500. </div>
  501. <div class="md-content" data-md-component="content">
  502. <article class="md-content__inner md-typeset">
  503. <h1>自定义结构解析</h1>
  504. <p>上一章节介绍如何序列化框架解析JSON, 而本章是介绍如何定义映射数据类</p>
  505. <h2 id="json">JSON<a class="headerlink" href="#json" title="Permanent link">&para;</a></h2>
  506. <p>解析接口返回的完整JSON</p>
  507. <div class="tabbed-set tabbed-alternate" data-tabs="1:3"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">JSON</label><label for="__tabbed_1_2">数据类</label><label for="__tabbed_1_3">网络请求</label></div>
  508. <div class="tabbed-content">
  509. <div class="tabbed-block">
  510. <div class="language-json highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="p">{</span>
  511. </span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="w"> </span><span class="nt">&quot;code&quot;</span><span class="p">:</span><span class="mi">0</span><span class="p">,</span>
  512. </span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="w"> </span><span class="nt">&quot;msg&quot;</span><span class="p">:</span><span class="s2">&quot;请求成功&quot;</span><span class="p">,</span>
  513. </span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="w"> </span><span class="nt">&quot;data&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
  514. </span><span id="__span-0-5"><a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="w"> </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;彭于晏&quot;</span><span class="p">,</span>
  515. </span><span id="__span-0-6"><a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a><span class="w"> </span><span class="nt">&quot;age&quot;</span><span class="p">:</span><span class="w"> </span><span class="mi">27</span><span class="p">,</span>
  516. </span><span id="__span-0-7"><a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a><span class="w"> </span><span class="nt">&quot;height&quot;</span><span class="p">:</span><span class="w"> </span><span class="mi">180</span>
  517. </span><span id="__span-0-8"><a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a><span class="w"> </span><span class="p">}</span>
  518. </span><span id="__span-0-9"><a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a><span class="p">}</span>
  519. </span></code></pre></div>
  520. </div>
  521. <div class="tabbed-block">
  522. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="kd">data</span><span class="w"> </span><span class="kd">class</span><span class="w"> </span><span class="nc">UserModel</span><span class="w"> </span><span class="p">(</span>
  523. </span><span id="__span-1-2"><a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">code</span><span class="p">:</span><span class="kt">Int</span><span class="p">,</span>
  524. </span><span id="__span-1-3"><a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">msg</span><span class="p">:</span><span class="kt">String</span><span class="p">,</span>
  525. </span><span id="__span-1-4"><a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">data</span><span class="p">:</span><span class="n">Data</span><span class="p">,</span>
  526. </span><span id="__span-1-5"><a id="__codelineno-1-5" name="__codelineno-1-5" href="#__codelineno-1-5"></a><span class="p">)</span><span class="w"> </span><span class="p">{</span>
  527. </span><span id="__span-1-6"><a id="__codelineno-1-6" name="__codelineno-1-6" href="#__codelineno-1-6"></a><span class="w"> </span><span class="kd">data</span><span class="w"> </span><span class="kd">class</span><span class="w"> </span><span class="nc">Data</span><span class="p">(</span><span class="kd">var</span><span class="w"> </span><span class="nv">name</span><span class="p">:</span><span class="w"> </span><span class="kt">String</span><span class="p">,</span><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">age</span><span class="p">:</span><span class="w"> </span><span class="kt">Int</span><span class="p">,</span><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">height</span><span class="p">:</span><span class="w"> </span><span class="kt">Int</span><span class="p">)</span>
  528. </span><span id="__span-1-7"><a id="__codelineno-1-7" name="__codelineno-1-7" href="#__codelineno-1-7"></a><span class="p">}</span>
  529. </span></code></pre></div>
  530. </div>
  531. <div class="tabbed-block">
  532. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="n">scopeNetLife</span><span class="w"> </span><span class="p">{</span>
  533. </span><span id="__span-2-2"><a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="w"> </span><span class="kd">val</span><span class="w"> </span><span class="nv">data</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Get</span><span class="o">&lt;</span><span class="n">UserModel</span><span class="o">&gt;</span><span class="p">(</span><span class="n">Api</span><span class="p">.</span><span class="na">USER</span><span class="p">).</span><span class="na">await</span><span class="p">().</span><span class="na">data</span>
  534. </span><span id="__span-2-3"><a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="p">}</span>
  535. </span></code></pre></div>
  536. </div>
  537. </div>
  538. </div>
  539. <details class="warning">
  540. <summary>以上设计不合理</summary>
  541. <p>正常情况下Http状态码200时只返回有效数据
  542. <div class="language-json highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="p">{</span>
  543. </span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="w"> </span><span class="nt">&quot;name&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;彭于晏&quot;</span><span class="p">,</span>
  544. </span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="w"> </span><span class="nt">&quot;age&quot;</span><span class="p">:</span><span class="w"> </span><span class="mi">27</span><span class="p">,</span>
  545. </span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="w"> </span><span class="nt">&quot;height&quot;</span><span class="p">:</span><span class="w"> </span><span class="mi">180</span>
  546. </span><span id="__span-3-5"><a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="p">}</span>
  547. </span></code></pre></div>
  548. 任何非正常流程返回200状态码, 例如400(错误请求)/401(认证失败)
  549. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-4-1"><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="p">{</span>
  550. </span><span id="__span-4-2"><a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a><span class="w"> </span><span class="s">&quot;code&quot;</span><span class="p">:</span><span class="m">412302</span><span class="p">,</span>
  551. </span><span id="__span-4-3"><a id="__codelineno-4-3" name="__codelineno-4-3" href="#__codelineno-4-3"></a><span class="w"> </span><span class="s">&quot;msg&quot;</span><span class="p">:</span><span class="s">&quot;密码错误&quot;</span><span class="p">,</span>
  552. </span><span id="__span-4-4"><a id="__codelineno-4-4" name="__codelineno-4-4" href="#__codelineno-4-4"></a><span class="p">}</span>
  553. </span></code></pre></div>
  554. 只要认为需要解析结构体情况下, 都应属于正常流程</p>
  555. </details>
  556. <h2 id="_1">剔除无效字段<a class="headerlink" href="#_1" title="Permanent link">&para;</a></h2>
  557. <p>以下演示仅解析<code>data</code>字段返回有效数据</p>
  558. <p>此数据类只需要包含data值</p>
  559. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-5-1"><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="kd">data</span><span class="w"> </span><span class="kd">class</span><span class="w"> </span><span class="nc">UserModel</span><span class="p">(</span><span class="kd">var</span><span class="w"> </span><span class="nv">name</span><span class="p">:</span><span class="w"> </span><span class="kt">String</span><span class="p">,</span><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">age</span><span class="p">:</span><span class="w"> </span><span class="kt">Int</span><span class="p">,</span><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">height</span><span class="p">:</span><span class="w"> </span><span class="kt">Int</span><span class="p">)</span>
  560. </span></code></pre></div>
  561. <p>转换器只解析data字段</p>
  562. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="kd">class</span><span class="w"> </span><span class="nc">GsonConvert</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">JSONConvert</span><span class="p">(</span><span class="n">code</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;code&quot;</span><span class="p">,</span><span class="w"> </span><span class="n">message</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;msg&quot;</span><span class="p">,</span><span class="w"> </span><span class="n">success</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;200&quot;</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
  563. </span><span id="__span-6-2"><a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kd">val</span><span class="w"> </span><span class="nv">gson</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">GsonBuilder</span><span class="p">().</span><span class="na">serializeNulls</span><span class="p">().</span><span class="na">create</span><span class="p">()</span>
  564. </span><span id="__span-6-3"><a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a>
  565. </span><span id="__span-6-4"><a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a><span class="w"> </span><span class="kd">override</span><span class="w"> </span><span class="kd">fun</span><span class="w"> </span><span class="o">&lt;</span><span class="n">S</span><span class="o">&gt;</span><span class="w"> </span><span class="n">String</span><span class="p">.</span><span class="nf">parseBody</span><span class="p">(</span><span class="n">succeed</span><span class="p">:</span><span class="w"> </span><span class="n">Type</span><span class="p">):</span><span class="w"> </span><span class="n">S? </span><span class="p">{</span>
  566. </span><span id="__span-6-5"><a id="__codelineno-6-5" name="__codelineno-6-5" href="#__codelineno-6-5"></a><span class="w"> </span><span class="kd">val</span><span class="w"> </span><span class="nv">data</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">JSONObject</span><span class="p">(</span><span class="k">this</span><span class="p">).</span><span class="na">getString</span><span class="p">(</span><span class="s">&quot;data&quot;</span><span class="p">)</span>
  567. </span><span id="__span-6-6"><a id="__codelineno-6-6" name="__codelineno-6-6" href="#__codelineno-6-6"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">gson</span><span class="p">.</span><span class="na">fromJson</span><span class="p">(</span><span class="n">data</span><span class="p">,</span><span class="w"> </span><span class="n">succeed</span><span class="p">)</span>
  568. </span><span id="__span-6-7"><a id="__codelineno-6-7" name="__codelineno-6-7" href="#__codelineno-6-7"></a><span class="w"> </span><span class="p">}</span>
  569. </span><span id="__span-6-8"><a id="__codelineno-6-8" name="__codelineno-6-8" href="#__codelineno-6-8"></a><span class="p">}</span>
  570. </span></code></pre></div>
  571. <p>请求直接返回</p>
  572. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-7-1"><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a><span class="n">scopeNetLife</span><span class="w"> </span><span class="p">{</span>
  573. </span><span id="__span-7-2"><a id="__codelineno-7-2" name="__codelineno-7-2" href="#__codelineno-7-2"></a><span class="w"> </span><span class="kd">val</span><span class="w"> </span><span class="nv">data</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Get</span><span class="o">&lt;</span><span class="n">UserModel</span><span class="o">&gt;</span><span class="p">(</span><span class="n">Api</span><span class="p">.</span><span class="na">USER</span><span class="p">).</span><span class="na">await</span><span class="p">()</span>
  574. </span><span id="__span-7-3"><a id="__codelineno-7-3" name="__codelineno-7-3" href="#__codelineno-7-3"></a><span class="p">}</span>
  575. </span></code></pre></div>
  576. <h2 id="_2">不规范数据<a class="headerlink" href="#_2" title="Permanent link">&para;</a></h2>
  577. <p>推荐在转换器中解析之前处理好数据</p>
  578. <ol>
  579. <li>
  580. <p>字段值为<code>"null"</code>而不是<code>null</code>, 或者json在字符串中
  581. <div class="language-json highlight"><pre><span></span><code><span id="__span-8-1"><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a><span class="w"> </span><span class="p">{</span>
  582. </span><span id="__span-8-2"><a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a><span class="w"> </span><span class="nt">&quot;data&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;{ &quot;</span><span class="kc">t</span><span class="err">i</span><span class="kc">tle</span><span class="s2">&quot;: &quot;</span><span class="kc">na</span><span class="err">me</span><span class="nt">&quot; }&quot;</span>
  583. </span><span id="__span-8-3"><a id="__codelineno-8-3" name="__codelineno-8-3" href="#__codelineno-8-3"></a><span class="w"> </span><span class="nt">&quot;msg&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;null&quot;</span>
  584. </span><span id="__span-8-4"><a id="__codelineno-8-4" name="__codelineno-8-4" href="#__codelineno-8-4"></a><span class="w"> </span><span class="p">}</span>
  585. </span></code></pre></div>
  586. <div class="language-kotlin highlight"><span class="filename">替换为规范内容</span><pre><span></span><code><span id="__span-9-1"><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a><span class="n">json</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">bodyString</span><span class="p">.</span><span class="na">replace</span><span class="p">(</span><span class="s">&quot;\&quot;{&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;{&quot;</span><span class="p">)</span>
  587. </span><span id="__span-9-2"><a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a><span class="n">json</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">bodyString</span><span class="p">.</span><span class="na">replace</span><span class="p">(</span><span class="s">&quot;}\&quot;&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;}&quot;</span><span class="p">)</span>
  588. </span><span id="__span-9-3"><a id="__codelineno-9-3" name="__codelineno-9-3" href="#__codelineno-9-3"></a><span class="n">json</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">bodyString</span><span class="p">.</span><span class="na">replace</span><span class="p">(</span><span class="s">&quot;\&quot;null\&quot;&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;null&quot;</span><span class="p">)</span>
  589. </span></code></pre></div></p>
  590. </li>
  591. <li>
  592. <p>服务器成功时不返回数据或者返回<code>null</code>
  593. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-10-1"><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">response</span><span class="p">.</span><span class="na">body</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="kc">null</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">bodyString</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="s">&quot;null&quot;</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
  594. </span><span id="__span-10-2"><a id="__codelineno-10-2" name="__codelineno-10-2" href="#__codelineno-10-2"></a><span class="w"> </span><span class="s">&quot;{}&quot;</span><span class="p">.</span><span class="na">bodyString</span><span class="p">.</span><span class="na">parseBody</span><span class="o">&lt;</span><span class="n">R</span><span class="o">&gt;</span><span class="p">(</span><span class="n">succeed</span><span class="p">)</span>
  595. </span><span id="__span-10-3"><a id="__codelineno-10-3" name="__codelineno-10-3" href="#__codelineno-10-3"></a><span class="p">}</span>
  596. </span></code></pre></div></p>
  597. </li>
  598. <li>
  599. <p>字段值为null, 使用 <a href="kotlin-serialization.html">kotlin-serialization</a> 自动使用字段默认值
  600. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-11-1"><a id="__codelineno-11-1" name="__codelineno-11-1" href="#__codelineno-11-1"></a><span class="p">{</span>
  601. </span><span id="__span-11-2"><a id="__codelineno-11-2" name="__codelineno-11-2" href="#__codelineno-11-2"></a><span class="w"> </span><span class="s">&quot;msg&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">null</span>
  602. </span><span id="__span-11-3"><a id="__codelineno-11-3" name="__codelineno-11-3" href="#__codelineno-11-3"></a><span class="p">}</span>
  603. </span></code></pre></div></p>
  604. </li>
  605. <li>字段无引号或字段名为数字, 使用 <a href="kotlin-serialization.html">kotlin-serialization</a> 可以禁用JSON规范限制
  606. <div class="language-json highlight"><span class="filename">数字使用map解析</span><pre><span></span><code><span id="__span-12-1"><a id="__codelineno-12-1" name="__codelineno-12-1" href="#__codelineno-12-1"></a><span class="w"> </span><span class="p">{</span>
  607. </span><span id="__span-12-2"><a id="__codelineno-12-2" name="__codelineno-12-2" href="#__codelineno-12-2"></a><span class="w"> </span><span class="nt">&quot;data&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
  608. </span><span id="__span-12-3"><a id="__codelineno-12-3" name="__codelineno-12-3" href="#__codelineno-12-3"></a><span class="w"> </span><span class="mi">23</span><span class="p">:</span><span class="w"> </span><span class="mi">32</span>
  609. </span><span id="__span-12-4"><a id="__codelineno-12-4" name="__codelineno-12-4" href="#__codelineno-12-4"></a><span class="w"> </span><span class="p">}</span>
  610. </span><span id="__span-12-5"><a id="__codelineno-12-5" name="__codelineno-12-5" href="#__codelineno-12-5"></a><span class="w"> </span><span class="p">}</span>
  611. </span></code></pre></div>
  612. <div class="language-kotlin highlight"><span class="filename">禁用JSON规范限制</span><pre><span></span><code><span id="__span-13-1"><a id="__codelineno-13-1" name="__codelineno-13-1" href="#__codelineno-13-1"></a><span class="kd">val</span><span class="w"> </span><span class="nv">jsonDecoder</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Json</span><span class="w"> </span><span class="p">{</span>
  613. </span><span id="__span-13-2"><a id="__codelineno-13-2" name="__codelineno-13-2" href="#__codelineno-13-2"></a><span class="w"> </span><span class="c1">// ...</span>
  614. </span><span id="__span-13-3"><a id="__codelineno-13-3" name="__codelineno-13-3" href="#__codelineno-13-3"></a><span class="hll"><span class="w"> </span><span class="n">isLenient</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="kc">true</span>
  615. </span></span><span id="__span-13-4"><a id="__codelineno-13-4" name="__codelineno-13-4" href="#__codelineno-13-4"></a><span class="p">}</span>
  616. </span></code></pre></div></li>
  617. </ol>
  618. <h2 id="_3">泛型数据类<a class="headerlink" href="#_3" title="Permanent link">&para;</a></h2>
  619. <p>某些地区很多开发者习惯这么使用, 因为他们接口返回无关字段, 但是技术不够无法自定义转换器来简化取值</p>
  620. <p>所以他们选择更复杂的方式: 使用泛型来简化</p>
  621. <div class="language-kotlin highlight"><pre><span></span><code><span id="__span-14-1"><a id="__codelineno-14-1" name="__codelineno-14-1" href="#__codelineno-14-1"></a><span class="kd">open</span><span class="w"> </span><span class="kd">class</span><span class="w"> </span><span class="nc">BaseResult</span><span class="o">&lt;</span><span class="n">T</span><span class="o">&gt;</span><span class="w"> </span><span class="p">{</span>
  622. </span><span id="__span-14-2"><a id="__codelineno-14-2" name="__codelineno-14-2" href="#__codelineno-14-2"></a><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">code</span><span class="p">:</span><span class="w"> </span><span class="kt">Int</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">0</span>
  623. </span><span id="__span-14-3"><a id="__codelineno-14-3" name="__codelineno-14-3" href="#__codelineno-14-3"></a><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">msg</span><span class="p">:</span><span class="w"> </span><span class="kt">String</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;&quot;</span>
  624. </span><span id="__span-14-4"><a id="__codelineno-14-4" name="__codelineno-14-4" href="#__codelineno-14-4"></a><span class="w"> </span><span class="kd">var</span><span class="w"> </span><span class="nv">data</span><span class="p">:</span><span class="w"> </span><span class="n">T? </span><span class="o">=</span><span class="w"> </span><span class="kc">null</span>
  625. </span><span id="__span-14-5"><a id="__codelineno-14-5" name="__codelineno-14-5" href="#__codelineno-14-5"></a><span class="p">}</span>
  626. </span><span id="__span-14-6"><a id="__codelineno-14-6" name="__codelineno-14-6" href="#__codelineno-14-6"></a>
  627. </span><span id="__span-14-7"><a id="__codelineno-14-7" name="__codelineno-14-7" href="#__codelineno-14-7"></a><span class="kd">class</span><span class="w"> </span><span class="nc">Result</span><span class="p">(</span><span class="kd">var</span><span class="w"> </span><span class="nv">name</span><span class="p">:</span><span class="w"> </span><span class="kt">String</span><span class="p">)</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">BaseResult</span><span class="o">&lt;</span><span class="n">Result</span><span class="o">&gt;</span><span class="p">()</span>
  628. </span></code></pre></div>
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